JP2789874B2 - Vehicle door lock control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle door lock control device having a function of preventing a key from being forgotten.

[0002]

2. Description of the Related Art There is a so-called keyless lock function that locks a door by closing a door while pulling a door handle (hereinafter referred to as an outside handle) outside a vehicle while a door lock knob in a vehicle compartment is operated to a lock side. The door lock device for a vehicle has been put to practical use.

However, the keyless lock function is generally used as a simple method because the door can be locked without using a door key. However, the keyless lock function is used while the door key, which is also used as the ignition key, is inserted into the ignition key cylinder. There is a case where the driver gets off the vehicle and locks the door, and in many cases, he does not notice this forgetting to remove the key.

[0004] In order to solve such a problem, a vehicle door lock control device having a function of preventing forgetting to remove a key has been devised and put to practical use. FIG. 7 is a time chart showing the operation of this type of vehicle door lock control device. The key insertion detection switch detects that the key has been inserted into the ignition key cylinder,
Further, if the door lock knob is operated to the lock side to perform a keyless lock while the door open state is detected by the door switch, an unlock signal is supplied to a door lock actuator that drives a door lock mechanism, and the actuator is unlocked. As a result, the door lock mechanism is driven to the unlock side, and the door lock knob is driven to the unlock side again. That is, the keyless lock cannot be performed, and as a result, the occupant notices that he has forgotten to remove the key from the key cylinder.

[0005]

The keyless lock operation has the following two operation procedures. That is, with the doors both open, the door lock knob is pushed to the lock side to close the door while pulling the outside handle, or the door lock knob is pushed to the lock side while pulling the outside handle to close the door.

However, when the keyless lock is performed in the latter operation procedure, when the state of forgetting to remove the key is detected and an unlock signal is output to the door lock actuator, the open lever and the sub lever of the door lock mechanism are pulled. As a result, the door lock mechanism is kept locked, and the function to prevent forgetting to remove the key may not operate normally. This state will be described with reference to FIGS. 8 and 9 showing the outline of the door lock mechanism. First, in FIG.
When the occupant operates the outside handle 1 in the direction of the arrow when the vehicle door is opened, the outside lever 3 is rotated in the direction of the arrow via the rod 2, and the sub-lever 4 engaged with the outside lever 3 is pushed down. . Normal,
This causes the open lever 5 to rotate in the direction of the arrow,
The latch (not shown) of the door lock mechanism is released. Now, in this state, when the door lock knob 6 is pushed down to the lock side, the knob lever 8 is turned to the arrow side via the rod 7. The knob lever 8 is engaged with the key lever 9, and the rotation of the knob lever 8 causes the key lever 9 to rotate in the direction of the arrow.

Next, in FIG. 9, when the door is opened with the key inserted into the key cylinder and the door lock knob 6 is operated to the lock side, as shown in FIG. When a signal is supplied, the door lock actuator drives the rod 10 in the direction of the arrow to rotate the knob lever 8 in the direction of the arrow. As a result, the key lever 9 is rotated in the direction of the arrow, and pushes the sub-lever 4 upward. At this time, the projection 4a of the sub-lever 4 interferes with the projection 5a of the open lever 5, so that even if the outside handle 1 is returned, the sub-lever 4 cannot move upward any more. Cannot return to the original position. That is,
The door lock mechanism remains locked, and the door cannot be unlocked again to prevent forgetting to remove the key.

An object of the present invention is to provide a vehicle door lock control device for securely unlocking a door lock mechanism to prevent forgetting to remove a key when trying to lock a door by forgetting to remove a key from an ignition key cylinder. To provide.

[0009]

The present invention will be described with reference to FIG. 1 which is a diagram corresponding to the claims. The present invention relates to a door lock mechanism 100 provided on a vehicle door and a locking mechanism for locking the door lock mechanism 100. Or actuator 1 to unlock
01; a door lock operating member 102 for locking or unlocking the door lock mechanism 100 from the vehicle interior; a lock / unlock detecting means 103 for detecting the locked state and unlocked state of the door lock operating member 102; Door open / close detecting means 104 for detecting the open / closed state, key inserted state detecting means 105 for detecting a key inserted state of the ignition key cylinder, and a key inserted state of the ignition key cylinder detected by the key inserted state detecting means 105; When the door opening / closing detecting means 104 detects that the door is open, the locking / unlocking detecting means 103 detects that the door lock operating member 102 has been operated from the unlocked state to the locked state.
The present invention is applied to a vehicle door lock control device provided with a drive control means 106 for controlling the drive of the vehicle 01 to the unlocking side. And
When the door open / close detection unit 104 detects the closed state of the door after the drive control unit 106 controls the drive of the actuator 101 to the unlocking side, the drive control unit 106
The above-mentioned object is achieved by controlling the drive 1 to the locking side and then controlling the drive again to the unlocking side.

[0010]

When the key insertion state of the ignition key cylinder is detected by the key insertion state detection means 105 and the door opening state is detected by the door opening / closing detection means 104, the drive control means 106 detects the lock / unlock detection means. When it is detected by 103 that the door lock operating member 102 has been operated from the unlocked state to the locked state, the drive of the actuator 101 is controlled to the unlocked side, and thereafter, the door open / close detecting means 104 detects the closed state of the door. Then, the drive of the actuator 101 is once controlled to the lock side, and then the drive is again controlled to the unlock side.

[0011]

FIG. 2 is a block diagram showing the configuration of the embodiment. In the figure, reference numeral 21 denotes a key insertion detection switch (hereinafter, referred to as a key switch), which is turned on when a key is inserted into an ignition key cylinder. 2
Reference numerals 2 and 23 denote state detection switches for detecting a locked state and an unlocked state of a door lock knob provided inside the door, and are turned on when the door lock knob is unlocked and turned off when the door lock knob is locked. FIG. 3 shows a door lock knob 25 and a driver's seat state detection switch 22 provided inside the driver's seat door 24. Note that the same applies to the passenger seat, and illustration thereof is omitted. Reference numerals 26 and 27 denote door switches for detecting the open / close states of the driver's seat and the passenger's seat doors, which are turned on when the door is opened and turned off when the door is closed.

Reference numerals 28 to 31 denote door lock actuators for driving the door lock mechanisms of the respective doors to lock or unlock the doors, 28 for the driver's door, 29 for the passenger's door, and 30 for the rear seat right. 31 is for the rear seat left door. Reference numeral 32 denotes a lock relay which supplies power to the door lock actuators 28 to 31 from the battery 33 and drives them to the lock side. Conversely, reference numeral 34 denotes an unlock relay which drives the door lock actuators to the unlock side. 35
Is a control circuit composed of a microcomputer and its peripheral components. Based on detection signals from the key switch 21, the state detection switches 22, 23, and the door switches 26, 27, the lock relay 32 and the unlock relay 34 are controlled. Turn on / off and lock / unlock each door. Reference numeral 36 denotes a constant voltage power supply unit that stabilizes the voltage of the battery 33 and supplies a constant voltage power to the control circuit 35.

When a key is inserted into the ignition key cylinder, the key switch 1 is closed (hereinafter, the closed state of the switch is called on and the open state is called off), and the power supply voltage of the battery 33 is supplied via the resistor 37. The voltage is applied to the terminal 35b of the control circuit 35. That is, the terminal 35b is Hi
Level. When the door lock mechanisms of the driver's seat and the passenger's seat are both locked, and the state detection switches 22 and 23 of the driver's seat and the passenger's seat are both off, the power supply voltage of the battery 33 is reduced by the resistor 38. , 39 to the terminal 35c, and the terminal 35c is in the Hi level state. When the door lock mechanism of the driver's seat or the passenger's seat is unlocked and one of the state detection switches 22 and 23 is turned on, the connection point between the resistor 38 and the resistor 39 is connected to the common line. That is, the terminal 35c of the control circuit 35 becomes Lo level. Further, when the doors of the driver seat and the passenger seat are both closed and the door switches 26 and 27 of the driver seat and the passenger seat are off, the power supply voltage of the battery 33 is supplied via the resistors 40 and 41. The voltage is applied to the terminal 35d, and the terminal 35d is in the Hi level state. When the door of the driver's seat or the passenger's seat is opened and one of the door switches 26 and 27 is turned on, the connection point between the resistor 40 and the resistor 41 is connected to the common line. That is, the terminal 35d of the control circuit 35 becomes Lo level. Reference numerals 42 to 44 denote filter capacitors, which prevent noise generated during chattering of the switches 21 to 23, 26, and 27 from entering the input terminals 35b to 35d of the control circuit 35 and causing the control circuit 35 to malfunction. I do.

FIG. 4 is a time chart showing a control program executed by the control circuit 35, and FIGS. The operation of the embodiment will be described with reference to these drawings. In step S1 in FIG. 4, it is determined whether the driver door state detection switch 22 and the passenger door state detection switch 23 have been switched from on to off, that is, both the driver and passenger door lock knobs are on the lock side. It is determined whether or not the operation has been performed, and if it is detected that the operation has been performed on the lock side, the process proceeds to step S2. In step S2, the door switches 26, 2 of the driver's seat or the passenger seat
7 is turned on, that is, whether the driver's seat or the passenger's seat door is open, and if it is open, the process proceeds to step S3; otherwise, the process proceeds to step S3.
Proceed to 10. In step S3, it is determined whether or not the key switch 21 is turned on, that is, whether or not the key has been inserted into the ignition key cylinder. If the key has been inserted, the process proceeds to step S4, and so on. If not, the process proceeds to step S10.

When all of the steps S1 to S3 are affirmed, it means that the door is being keylessly locked without forgetting to remove the key from the ignition key cylinder.
When this state is detected, first, in step S4, for example, after waiting for 0.3 seconds, in step S5, the terminal 3
For example, an unlock signal is output to 5f for 1.4 seconds. That is, the terminal 35f is set to the Lo level for 1.4 seconds. As a result, a current flows from the battery 33 through the path of the coil of the unlock relay 34 → the terminal 35f → the terminal 35g → the common line, and the unlock relay 34 is excited (hereinafter, the excitation state of the relay is called “on” and the non-excitation state State is called off). At this time, the contact of the unlock relay 34 is switched from the B side to the A side, and a current flows from the battery 33 through the path of the contact A of the unlock relay 34 → the actuator 28 to 31 → the contact B of the lock relay 32 → the common line. And the actuators 28 to 31 drive the door lock mechanisms of the respective doors to the unlock side.

At this time, when the door lock mechanisms of at least the driver's door and the passenger's door are unlocked by the actuators 28 to 31, the state detection switches 22, 23 are turned on as shown in FIG. Indicates that the door lock mechanism of the passenger seat door is unlocked. At this time, as described above with reference to FIGS.
In the door lock mechanism of the driver's door or the passenger's door, the protrusion 4a of the sub lever 4 is connected to the protrusion 5 of the open lever 5.
When the door lock mechanism cannot be unlocked due to the interference with a, one of the state detection switches 22 and 23 of the driver's door or the passenger's door remains off as shown in FIG.

Next, at step S6, the door switch 26,
It is determined whether any of the buttons 27 has been turned off, that is, whether the driver's seat door and the passenger's seat door have been closed. When the doors are closed, the process proceeds to step S7, and waits for, for example, 0.3 seconds. In a succeeding step S8, a lock signal is output to the terminal 35e for 0.3 seconds. That is, the terminal 35e is set to the Lo level for 0.3 seconds. Thereby, the coil of the lock relay 32 from the battery 33 → the terminal 35e → the terminal 35g →
A current flows through the path of the common line, and the lock relay 32 turns on. At this time, the contact of the lock relay 32 is switched from B side to A
Side, the current flows from the power supply 33 through the path of the contact A of the relay 32, the contact 28 of the relay 32, the contact B of the relay 34, and the common line, and the actuators 28 to 31 drive the door lock mechanisms of the respective doors to the lock side. I do. As a result, even if the protrusion 4a of the sub-lever 4 interferes with the protrusion 5a of the open lever 5 in the door lock mechanism of the driver's seat door or the passenger's seat door and the catch is generated, the drive to the lock side is performed. Then the hook comes off.

In step S9, the terminal 35 is returned.
f outputs an unlock signal, for example, for 1.4 seconds, and turns on the unlock relay 34 to turn on the actuators 28 to 31.
To the unlock side. This unlocks all doors. On the other hand, if it is determined in step S2 that the door is closed, or if it is determined in step S3 that the key has not been inserted into the ignition key cylinder, a lock signal is transmitted to the terminal 35e in step S10, for example. Output for 0.7 seconds, lock relay 32
Is turned on to drive the actuators 28 to 31 to the lock side. That is, when the door lock knob is driven to the lock side when the door is closed, it is a normal door lock operation, and all the doors are locked. Similarly, when the door lock knob is operated to the lock side when the door is open and the key is not inserted into the ignition key cylinder, it is a normal keyless lock operation and all the doors are locked.

As described above, when the key switch 21 detects the key insertion state of the ignition key cylinder and the door switches 26 and 27 detect the opening of the door, the state lock switches 22 and 23 unlock the door lock knob. Side is operated, the actuators 28 to 31 are driven to the unlock side, and thereafter, when the door switches 26 and 27 detect that the doors are closed, the actuators 28 to 31 are temporarily operated.
Is driven to the unlock side again after the door is driven to the lock side.
Even if the projection 4a of the opening lever 5 interferes with the projection 5a of the open lever 5, the hook is released when the door lock mechanism is once driven to the lock side, and is reliably driven by the subsequent drive to the unlock side. The door can be unlocked to prevent the door from being locked while the key is inserted into the ignition key cylinder.

In the above embodiment, even if the sub-lever and the open lever of the door lock mechanism are unlocked normally without being hooked during the initial unlocking operation, the door lock mechanism is once driven to the lock side and then unlocked again. Although the door is driven to the lock side, the state detection switch 2 determines whether or not the door is unlocked during the initial unlock drive.
The lock drive after the door is closed and the unlock drive subsequent thereto may not be performed if the door is normally unlocked by the detection by the control units 2 and 23.

In the above-described embodiment, an example has been described in which a state detection switch and a door switch are provided on the driver's seat door and the passenger's seat door to perform the operation of preventing forgetting to remove a key. May be performed, or a state detection switch and a door switch may be provided on all the doors to perform an operation for preventing forgetting to remove a key.

In the configuration of the above embodiment, the key insertion detection switch 21 is a key insertion state detection means, the door switches 26 and 27 are door opening / closing detection means, the door lock knob 25 is a door lock operation member, and the state detection switch 2
The control circuit 35, the lock relay 32 and the unlock relay 34 constitute a drive control means, respectively.

[0023]

As described above, according to the present invention, when the key insertion state of the ignition key cylinder is detected and the door opening state is detected, the operation of the door lock operating member to the locked state is detected. Then, the drive control of the actuator to the unlocking side, and then, when the closing of the door is detected, once the drive control of the actuator to the locking side, then drive control to the unlocking again, so,
Even if the door lock mechanism is locked during the initial drive to the unlocking side and remains locked, the lock is released when driving to the locking side, and subsequent drive to the unlocking side The door lock mechanism can be reliably unlocked, and locking of the vehicle door with the key inserted into the ignition key cylinder can be avoided.

[Brief description of the drawings]

FIG. 1 is a diagram corresponding to claims.

FIG. 2 is a block diagram showing a configuration of one embodiment.

FIG. 3 is a diagram showing an attached state of a door lock knob and a state detection switch.

FIG. 4 is a flowchart illustrating an example of a control program for performing an operation for preventing forgetting to remove a key.

FIG. 5 is a time chart showing an operation for preventing a key from being forgotten.

FIG. 6 is a time chart showing an operation for preventing a key from being forgotten.

FIG. 7 is a time chart showing a conventional key forgetting prevention operation.

FIG. 8 is a diagram showing a state of a door lock mechanism when a key is locked by pulling an outside handle of the vehicle.

FIG. 9 is a view showing a state of a door lock mechanism when an unlocking operation is performed by an actuator to prevent forgetting to remove a key.

[Explanation of symbols]

 Reference Signs List 1 outside handle 2, 7, 10 rod 3 outside lever 4 sub lever 5 open lever 6, 25 door lock knob 8 knob lever 9 key lever 21 key insertion detection switch 22 driver's seat state detection switch 23 passenger's seat state detection switch 26 driver's door switch 27 Passenger Door Switch 28 Door Lock Actuator for Driver Door 29 Door Lock Actuator for Passenger Door 30 Door Lock Actuator for Rear Right Seat Door 31 Door Lock Actuator for Rear Left Seat 32 Lock Relay 33 Battery 34 Unlock Relay 35 Control Circuit 36 Constant voltage power supply unit 37-41 Resistor 42-44 Capacitor 100 Door lock mechanism 101 Actuator 102 Door lock operating member 103 Lock / unlock detection hand Step 104 Door open / close detecting means 105 Key insertion state detecting means 106 Drive control means

Claims (1)

(57) [Claims] 1. A door lock mechanism provided on a door of a vehicle, an actuator for locking or unlocking the door lock mechanism, a door lock operating member for locking or unlocking the door lock mechanism from a vehicle interior, Locking / unlocking detecting means for detecting a locked state and an unlocked state of a door lock operating member; door opening / closing detecting means for detecting an open / closed state of the door; and a key insertion state detection for detecting a key insertion state of an ignition key cylinder. When the key insertion state of the ignition key cylinder is detected by the key insertion state detection means, and when the door is opened by the door opening / closing detection means, the lock / unlock detection means detects the door. When it is detected that the lock operation member has been operated from the unlocked state to the locked state, the activation is performed. A vehicle door lock control device comprising: a drive control unit that drives and controls the actuator to the unlocking side; wherein the drive control unit controls the drive of the actuator to the unlocking side and then controls the opening and closing of the door by the door open / close detection unit. A door lock control device for a vehicle, wherein when a closed state is detected, the drive control of the actuator is performed once to the locking side, and then the drive control is performed again to the unlock side.